-ous
Concise Oxford English Dictionary © 2008 Oxford University Press:
-ous
▶suffix forming adjectives.
- 1 characterized by: mountainous.
- 2 Chemistry denoting an element in a lower valency: sulphurous. Compare with -ic.
– derivatives
-ously suffix,
-ousness suffix.
-ously suffix,
-ousness suffix.
– origin from Anglo-Norman Fr., or OFr. -eus, from L. -osus.
'-ous' also found in these Oxford entries:
abstemious
- -aceous
- acephalous
- -acious
- adventitious
- allochthonous
- ambidextrous
- ambiguous
- amorphous
- anadromous
- analogous
- androgynous
- -androus
- anhydrous
- anonymous
- anthropomorphous
- anxious
- apetalous
- apocarpous
- apodous
- apterous
- arduous
- argillaceous
- -arious
- assiduous
- auriferous
- autocephalous
- azygous
- bicephalous
- biramous
- caducous
- cancellous
- canorous
- cinereous
- consanguineous
- conscious
- conspicuous
- contemporaneous
- conterminous
- contiguous
- continuous
- coriaceous
- corneous
- credulous
- Cretaceous
- cruciferous
- cupreous
- cutaneous
- deciduous
- decorous
